CN101815097A

CN101815097A - Method and device for realizing call holding in CTD calling business

Info

Publication number: CN101815097A
Application number: CN201010140635A
Authority: CN
Inventors: 彭磊
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2010-04-07
Filing date: 2010-04-07
Publication date: 2010-08-25
Also published as: WO2011124042A1

Abstract

The invention discloses a method and a device for realizing call holding in CTD calling business; the method comprises the following steps that: when receiving a call request initiated by the third party to call the current one call terminal, a CTD application server notifies CTD Web server notifies a CTD Web server and sets a terminal which converses with a current called terminal to be in the call holding state after obtaining an instruction message that the CTD Web server feedbacks to hold the current call and receive the call of the third party, so as to bridge the current called terminal and the third party. The device comprises a call request receiving unit, an operation instruction obtaining unit and a call holding execution unit. The method realizes the call holding function through the CTD calling business, and the realization of the call holding function does not depend on the terminal, thereby eliminating the requirement of the call holding business on the terminal.

Description

Realize calling out the method and apparatus that keeps in a kind of CTD call business

Technical field

The present invention relates to communication technical field, relate in particular to and realize calling out the method and apparatus that keeps in a kind of CTD (Click To Dial, Click To Dial) call business.

Background technology

So-called CTD business, be by the CTD business with the user wish two sides that converse or in many ways telephone number carry out the speech channel bridge joint, and realize the calling class service of two sides or MPTY.

Traditional call business, promptly the user is by terminal (as: landline telephone, mobile phone etc.), dials directly that the purpose telephone number realizes.And CTD calls out, and then is the calling of being initiated the telephone number that two-way or multichannel need converse by CTD AS (CTD Application Server, CTD service application service device) respectively.Wait to need two sides of conversation or reply a kind of calling of again its bridge joint being got up afterwards in many ways.

The CTD business belongs to a kind of B2B (formula back-to-back) and calls out the class service, is being widely used in the communication network now, as: WebCall, Web800 etc. belongs to CTD call business or its business of deriving.The advantage of CTD business has: a kind of visual conversation is provided, the visual video calling that is not meant herein, mean: the user can be by the operation interface of CTD calling, view the state of current talking, as: the telephone number of both call sides and name, call state (as: called terminal ringing, called party answer, Called Onhook, called calling keep medium), in order to make call interface more attractive in appearance even can on the interface, show head portrait that both sides use etc., professional IM (Instance Message, the instant message) business that can further expand the realization both call sides.And along with the emergence of 3G network, the fusion of CS and PS network makes the CTD business that boundless development and usage space be arranged.

As shown in Figure 1, be the network element structure chart of CTD operation system, each Network Element Function is as follows among the figure:

The user logins Web or client software terminal: offer the device that the user makes a call or calls out control, and as PC, 3G terminal etc.

CTD WS (CTD Web Server, CTD Web server): provide CTD to call out the HTTP service function, user's login, conversation number is filled in, functions such as conversation control and information display interface.

CTDCTD AS (CTD Application Server, CTD service application service device): bottom CTD is provided professional ability, as: call out control, state reports, functions such as ticket generation.

MRS (Media Resource Server, Media Resource Server): the voice medium ability is provided, is generally media server (Media Server, i.e. MS).

Call terminal (User E quipment is called for short UE): user's communication uses, and concrete physical equipment has: landline telephone, the video calling terminal of mobile phone or specialty etc.

Said network element information interaction institute use agreement is as follows:

User Web uses http protocol with being the HTTP service call between the CTD WS.

CTD WS is with being the service communication among unit between the CTD AS, transport layer is used Transmission Control Protocol, and application layer protocol can be selected XML etc. according to concrete needs, if do not use application layer protocol, and can self-defined TCP message body or use the hereinafter TCP message body structure of definition.

CTD AS is with being the media negotiation of call conversation between MRS or the UE, and CTD AS and UE use the Session Initiation Protocol intercommunication by core net, and CTD AS is with using Session Initiation Protocol or MGCP agreement, the protocol type that concrete decision is supported in MRS between the MRS usually.

UE is with being the transmission of Media Stream between the MRS, and the code/decode format of the concrete medium bag of UE and MRS is received and dispatched port, bandwidth for transmission speed etc., and during according to calling, terminal is carried out with the media negotiation between the MRS.

In the traditional calling business, call hold service has appearred.The so-called calling keeps, that is: certain user A is in the conversation, and have another one user B that this user A is called out this moment, and then user A can notify user B to keep, the function of conversing with it more after a while.

Calling out the use that keeps function, need the terminal of user's communication to have this ability, promptly is not that all terminals can be used this function, and the telephone terminal that needs the user to use has the realization of certain hardware and software.

Summary of the invention

The invention provides and realize calling out the method and apparatus that keeps in a kind of CTD call business, in order to solve the call hold service that exists in the prior art software and hardware of terminal is had relatively high expectations, the part terminal can not be used the problem of call hold service.

Realize in the CTD call business provided by the invention calling out the method that keeps, comprising:

The CTD application server is when the call request of the current a certain call terminal of calling that receives third party's initiation, notice CTD Web server, and after the maintenance current talking that gets access to described CTD Web server feedback is answered the Indication message of third party call, it is to call out hold mode that the terminal of conversing with current terminal called is set, and current terminal called and third party are carried out the session bridge joint.

Wherein, carry described third-party media information in the described call request message.

Described CTD application server also notifies Media Resource Server MRS to described third party's playing alert tones or ring-back tone when receiving the call request of described third party's initiation.

Method provided by the invention further has following characteristics:

The terminal of described setting and the conversation of current terminal called is specially for calling out hold mode:

Described CTD application server sends Re-Invite SIP request to the terminal with the conversation of current terminal called, and after receiving the response message of feedback, notice Media Resource Server MRS to the terminal plays prompt tone or the ring-back tone of current terminal called conversation.

Describedly current terminal called and third party carried out the session bridge joint be specially:

Described CTD application server sends the Re-Invite sip request message that carries described third party's media information to current terminal called, and after current terminal called returns acknowledge message, send the true media information of current terminal called to described third party, finish the session bridge joint.

Described CTD application server is behind the Indication message of the continuation current talking that gets access to described CTD Web server feedback, and notice Media Resource Server MRS plays the just busy prompt tone message of calling to described third party.

The present invention also provides a kind of click to dial CTD application server, is applied in the CTD call business system, is used for setting up conversation between calling both sides based on the CTD business; Further, described CTD application server comprises:

The call request receiving element is used to receive the call request of the current a certain call terminal of calling that the third party initiates;

Operation instruction obtaining unit, be used to notify the call request that described third party initiates of CTD Web server, receive the operational order of described CTD Web server feedback, and when described operational order is answered the Indication message of third party call for keeping current talking, trigger described calling and keep performance element;

Call out the maintenance performance element, the terminal that is used to be provided with current terminal called conversation is the calling hold mode, and current terminal called and third party are carried out the session bridge joint.

Wherein, carry described third-party media information in the call request message that receives in the described call request receiving element.

Described calling keeps the terminal of performance element setting and the conversation of current terminal called to comprise for the mode of calling out hold mode: described calling keeps performance element to send the Re-InviteSIP request to the terminal with current terminal called conversation, and after receiving the response message of feedback, notice Media Resource Server MRS to the terminal plays prompt tone or the ring-back tone of current terminal called conversation.

Described calling keeps performance element to send the Re-Invite sip request message that carries described third party's media information to current terminal called, and after current terminal called returns acknowledge message, send the true media information of current terminal called to described third party, finish the session bridge joint.

Compared with prior art, beneficial effect of the present invention is as follows:

Method provided by the invention has realized calling out the maintenance function by the CTD call business, and this calling keeps the realization of function not rely on terminal, has eliminated the requirement of call hold service to terminal, has enlarged the call hold service range of application; In addition, the method for the invention also is the favourable expansion to the CTD call business, has improved user experience.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the network element structure chart of CTD operation system in the prior art;

Fig. 2 is a flow chart of realizing calling out the maintenance method in the CTD call business provided by the invention;

Realize calling out the flow chart of maintenance method in the CTD call business that Fig. 3 provides for the embodiment of the invention;

Fig. 4 is the structural representation of CTD application server provided by the invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.

The invention provides and realize calling out the method and apparatus that keeps in a kind of CTD call business, the function of calling maintenance that this method has been passed through the CTD application server realizing, solved the call hold service that exists in the prior art software and hardware of terminal is had relatively high expectations, the part terminal can not be used the problem of call hold service.

As shown in Figure 2, for realizing calling out the method flow diagram that keeps in the CTD call business provided by the invention, certainly, the implementing precondition of this flow process is to have set up the call conversation of at least two terminal rooms, and this method specifically may further comprise the steps:

Step S201, CTD application server receive the call request of the current a certain call terminal of calling of third party's initiation.Wherein, include third-party media information in the described call request message.

The described third party of step S202, the CTD application server notice CTD Web server incident that makes a call, and after the maintenance current talking that gets access to CTD Web server feedback is answered the Indication message of third party call, execution in step S203.

It is to call out hold mode that step S203, CTD application server are provided with the terminal of conversing with current terminal called, and current terminal called and third party are carried out the session bridge joint.

The specific implementation process of the method for the invention is described below by a concrete example:

This example specifically may further comprise the steps:

Step 1, user A and user B set up call conversation by the CTD business.

Step 2, the pre-and user A of user C converses, to the CTD AS request of making a call;

Step 3, CTD AS send user C to CTD WS and require the notice that inserts, and CTD WS to CTD AS transmit operation instruction, answers the calling of active user C when this operational order for user A selection based on user's selection, then changes step 4; If the continuation current talking is then changeed step 7.

Step 4, MRS is to user C playback process stand by tone or ring-back tone for CTD AS notice.

Step 5, CTD AS calls out user B and keeps, and puts the maintenance warning tone.

Step 6, CTD AS calls out user C to bridge joint with user A, realizes call conversation.

Step 7, the prompt tone of CTD AS notice MRS in user C broadcast conversation, and call release, flow process finishes.

Certainly, if user C has call waiting function, the functional module or the business that then also can change Call Waiting over to are handled, and flow process finishes.

Method provided by the invention has realized calling out the maintenance function by the CTD call business, and this calling keeps the realization of function not rely on terminal, has eliminated the requirement of call hold service to terminal.

For clearer statement implementation procedure of the present invention, further provide ins and outs of the present invention below in conjunction with concrete signaling process, make it that specific implementation process of the method that provides of the present invention can be described better.

As shown in Figure 3, realize in the CTD call business that provides for present embodiment calling out the maintenance method, comprising:

Step S301, CTD AS set up the call conversation of user UE A and UE B.

Call conversation is set up process and is specifically realized by following manner in this step:

(1) conversation number filled in based on the user of CTD WS makes a call request to create to CTD AS, carries both call sides number (being the number of UE A and UE B) information in this request message.

(2) CTD AS returns to call out to create to CTD WS and responds CTD WS, and expression is called out and created.

(3) CTD AS sends Invite SIP and asks the A to UE, and carrying medium is Empty Medium or false medium.

(4) UE A returns 100Trying and represents successfully to receive Invite request.

(5) UE A returns the 180Ringing sign, in the present ring of UE A.

(6) to report UE A current state to CTD WS be ring to CTD AS.

(7) UE A off-hook returns 200 OK response.

(8) CTD AS returns the ACK affirmation to UE A.

(9) CTD AS reports UE A current state for replying to CTD WS.

(10) CTD AS sends Invite SIP and asks the B to UE, and carrying medium is Empty Medium or false medium.

(11) UE B returns 100Trying and represents successfully to receive Invite request.

(12) UE B returns the 180Ringing sign, in the present ring of UE B.

(13) to report UE B current state to CTD WS be ring to CTD AS.

(14) UE B off-hook returns 200 OK response.

(15) CTD AS returns the ACK affirmation to UE B.

(16) CTD AS sends Re-Invite SIP request to UE A, to the true media information of UE A notice UE B.

(17) UE A returns the 200 OK response of Re-Invite.

(18) CTD AS returns the ACK affirmation.

(19) CTD AS sends Re-Invite SIP request to UE B, to the true media information of UE B notice UE A.

(20) UE B returns the 200 OK response of Re-Invite.

(21) CTD AS returns the ACK affirmation.

(22) CTD AS reports UE B current state for replying to CTD WS, realizes that the session of UE A and UE B is set up.

Continue step S301;

Step S302, third party user UE C converse to CTD AS transmission Invite message request and UE A.Wherein, carry UE C self media information in the request message.

Step S303, CTD AS send the 100Trying identification request to UE C and receive.

Step S304, CTD AS send the session that the Invite sip message is created playback operation to MRS.

Step S305, MRS return 200 OK response to CTD AS, and carry the media information of self.

Step S306, CTD AS return ACK and confirm.

Step S307, CTD AS return 183 responses and carry the MRS media information to UE C.

Step S308, UE C return 183 PRACK (Provisional Ack, provisional response) response to CTD AS.

Step S309, CTD AS return 200 of PRACK and confirm.

Step S310, CTD AS send INFO to MRS, and request is to UE C playing alert tones or ring-back tone.

Step S311, MRS return the 200OK response of INFO.

Step S312, MRS return playback INFO as a result to CTD AS.

Step S313, CTD AS return the 200OK response of INFO.

Step S314, CTD AS have the call request of UE C to CTD WS notice.

Step S315, CTD WS send to CTD AS based on user instruction and keep UE B and answer the request that UE C calls out.

Step S316, CTD AS return response to CTD WS.

Step S317, CTD AS send the session that the Invite sip message is created playback operation to MRS.

Step S318, MRS return 200 OK response to CTD AS, and carry the media information of self.

Step S319, CTD AS return ACK and confirm.

Step S320, CTD AS send Re-Invite SIP request to UE B, to the media information of UE B notice MRS.

Step S321, UE B return the 200 OK response of Re-Invite.

Step S322, CTD AS return ACK and confirm.

Step S323, CTD AS send INFO to MRS, and request is to UE B playing alert tones.

Step S324, MRS return the 200OK response of INFO.

Step S325, MRS return playback INFO as a result to CTD AS.

Step S326, CTD AS return the 200OK response of INFO.

Step S327, CTD AS report the state of UE B for being held to CTD WS.

Step S328, CTD AS send Re-Invite SIP request to UE A, carry the true media information of UE C.

Step S329, UE A return the 200 OK response of Re-Invite.

Step S330, CTD AS return ACK and confirm.

Step S331, CTD AS be to converse with UE C to CTD WS notice UE A condition.

Step S332, CTD AS return 200 OK response to UE C, carry the true media information of UE A.

Step S333, UE C return ACK to CTD AS and confirm.

Step S334, CTD AS report UE C state in conversing with UE A to CTD WS.

The present invention also provides a kind of CTD application server, is applied in the CTD call business system, is used for setting up conversation between calling both sides based on the CTD business, and as shown in Figure 4, described CTD application server comprises:

Call request receiving element 410 is used to receive the call request of the current a certain call terminal of calling that the third party initiates;

Operation instruction obtaining unit 420, be used to notify the call request that described third party initiates of CTD Web server, receive the operational order of described CTD Web server feedback, and when described operational order is answered the Indication message of third party call for keeping current talking, trigger described calling and keep performance element 430;

Call out maintenance performance element 430, the terminal that is used to be provided with current terminal called conversation is the calling hold mode, and current terminal called and third party are carried out the session bridge joint.

Wherein, carry described third-party media information in the call request message that receives in the call request receiving element 410.

Call out and keep the terminal that performance element 430 is provided with and current terminal called is conversed to comprise for the mode of calling out hold mode:

Call out and keep performance element 430 to send Re-Invite SIP request to terminal with current terminal called conversation, and after receiving the response message of feedback, notice Media Resource Server MRS to the terminal plays prompt tone or the ring-back tone of current terminal called conversation.

Call out and keep performance element 430 to send the Re-Invite sip request message that carries described third party's media information to current terminal called, and after current terminal called returns acknowledge message, send the true media information of current terminal called to described third party, finish the session bridge joint.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. realize calling out the method that keeps in a click to dial CTD call business, it is characterized in that, comprising:

2. the method for claim 1 is characterized in that, carries described third-party media information in the described call request message.

3. method as claimed in claim 1 or 2 is characterized in that, described CTD application server also notifies Media Resource Server MRS to described third party's playing alert tones or ring-back tone when receiving the call request of described third party's initiation.

4. method as claimed in claim 1 or 2 is characterized in that, the terminal of described setting and the conversation of current terminal called is specially for calling out hold mode:

5. method as claimed in claim 2 is characterized in that, describedly current terminal called and third party are carried out the session bridge joint is specially:

6. the method for claim 1, it is characterized in that, described CTD application server is behind the Indication message of the continuation current talking that gets access to described CTD Web server feedback, and notice Media Resource Server MRS plays the just busy prompt tone message of calling to described third party.

7. a click to dial CTD application server is applied in the CTD call business system, is used for setting up conversation between calling both sides based on the CTD business, it is characterized in that described CTD application server comprises:

8. CTD application server as claimed in claim 7 is characterized in that, carries described third-party media information in the call request message that receives in the described call request receiving element.

9. as claim 7 or 8 described CTD application servers, it is characterized in that described calling keeps the terminal of performance element setting and the conversation of current terminal called to comprise for the mode of calling out hold mode:

Described calling keeps performance element to send Re-Invite SIP request to the terminal with current terminal called conversation, and after receiving the response message of feedback, notice Media Resource Server MRS to the terminal plays prompt tone or the ring-back tone of current terminal called conversation.

10. CTD application server as claimed in claim 8 is characterized in that,